“He has a certain way that he wants to play and it fits what we were looking for as well,” said Sounders sporting director Chris Henderson told the club's website. “With the style that we have, with our outside backs getting a great number of touches each game, it’s an important position for our squad.”

Leerdam was born in Suriname, but represented the Netherlands at the U-19 and U-21 level. He has yet to be capped for the senior side.